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Newprimus I can't be more agree with you, something that is to take note off is that, because this is a manga with limited number of pages and vignettes they can't go too in dept with the society rules from there, not how the author goes in the Light novel at least.
and yeah, Numerals are a big fuxking deal, he does more than that in further volumes but aura takes all the credit publicly(he also doesn't want any credit).
If one can't understand the reasoning behind all of that despite reading the light novel( there are some), their IQ must not be above average.
PS: and yes, I'm talking about the light novel not web novel...